vboxvfs_vfsops.c@ 10516

最後變更在這個檔案從10516是 10456,由 vboxsync 提交於 16 年前
Solaris vboxvfs: older bits commiting now.
屬性 svn:eol-style 設為 `native` 屬性 svn:keyword 設為 `Id` 屬性 svn:keywords 設為 `Id`
檔案大小: 18.6 KB

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1	/* $Id: vboxvfs_vfsops.c 10456 2008-07-10 07:04:39Z vboxsync $ */
2	/** @file
3	* VirtualBox File System Driver for Solaris Guests. VFS operations.
4	*/
5
6	/*
7	* Copyright (C) 2008 Sun Microsystems, Inc.
8	*
9	* Sun Microsystems, Inc. confidential
10	* All rights reserved
11	*/
12
13
14	/*******************************************************************************
15	* Header Files *
16	*******************************************************************************/
17	#include <sys/types.h>
18	#include <sys/mntent.h>
19	#include <sys/param.h>
20	#include <sys/modctl.h>
21	#include <sys/mount.h>
22	#include <sys/policy.h>
23	#include <sys/atomic.h>
24	#include <sys/sysmacros.h>
25	#include <sys/ddi.h>
26	#include <sys/sunddi.h>
27	#include "vboxvfs.h"
28
29	#if defined(DEBUG_ramshankar) && !defined(LOG_ENABLED)
30	# define LOG_ENABLED
31	# define LOG_TO_BACKDOOR
32	#endif
33	#include <VBox/log.h>
34	#include <iprt/string.h>
35	#include <iprt/mem.h>
36	#include <iprt/err.h>
37	#if defined(DEBUG_ramshankar)
38	# undef LogFlow
39	# define LogFlow LogRel
40	# undef Log
41	# define Log LogRel
42	#endif
43
44	/*******************************************************************************
45	* Defined Constants And Macros *
46	*******************************************************************************/
47	/** Mount Options */
48	#define MNTOPT_VBOXVFS_UID "uid"
49	#define MNTOPT_VBOXVFS_GID "gid"
50
51
52	/*******************************************************************************
53	* Internal Functions *
54	*******************************************************************************/
55	static int VBoxVFS_Init(int fType, char *pszName);
56	static int VBoxVFS_Mount(vfs_t pVFS, vnode_t pVNode, struct mounta pMount, cred_t pCred);
57	static int VBoxVFS_Unmount(vfs_t pVFS, int fFlags, cred_t pCred);
58	static int VBoxVFS_Root(vfs_t pVFS, vnode_t *ppVNode);
59	static int VBoxVFS_Statfs(register vfs_t pVFS, struct statvfs64 pStat);
60	static int VBoxVFS_VGet(vfs_t pVFS, vnode_t ppVNode, struct fid pFid);
61	static void VBoxVFS_FreeVFS(vfs_t *pVFS);
62
63	static int vboxvfs_CheckMountPerm(vfs_t pVFS, struct mounta pMount, vnode_t pVNodeSpec, cred_t pCred);
64	static int vboxvfs_GetIntOpt(vfs_t pVFS, char pszOpt, int *pValue);
65
66
67	/*******************************************************************************
68	* Structures and Typedefs *
69	*******************************************************************************/
70	/**
71	* mntopts_t: mount options table array
72	*/
73	static mntopt_t g_VBoxVFSMountOptions[] =
74	{
75	/* Option Name Cancel Opt. Default Arg Flags Data */
76	{ MNTOPT_VBOXVFS_UID, NULL, NULL, MO_HASVALUE, NULL },
77	{ MNTOPT_VBOXVFS_GID, NULL, NULL, MO_HASVALUE, NULL }
78	};
79
80	/**
81	* mntopts_t: mount options table prototype
82	*/
83	static mntopts_t g_VBoxVFSMountTableProt =
84	{
85	sizeof(g_VBoxVFSMountOptions) / sizeof(mntopt_t),
86	g_VBoxVFSMountOptions
87	};
88
89	/**
90	* vfsdef_t: driver specific mount options
91	*/
92	static vfsdef_t g_VBoxVFSDef =
93	{
94	VFSDEF_VERSION,
95	DEVICE_NAME,
96	VBoxVFS_Init,
97	VSW_HASPROTO,
98	&g_VBoxVFSMountTableProt
99	};
100
101	/**
102	* modlfs: loadable file system
103	*/
104	static struct modlfs g_VBoxVFSLoadMod =
105	{
106	&mod_fsops, /* extern from kernel */
107	DEVICE_DESC,
108	&g_VBoxVFSDef
109	};
110
111	/**
112	* modlinkage: export install/remove/info to the kernel
113	*/
114	static struct modlinkage g_VBoxVFSModLinkage =
115	{
116	MODREV_1, /* loadable module system revision */
117	&g_VBoxVFSLoadMod,
118	NULL /* terminate array of linkage structures */
119	};
120
121
122	/*******************************************************************************
123	* Global Variables *
124	*******************************************************************************/
125	/** GCC C++ hack. */
126	unsigned __gxx_personality_v0 = 0xdecea5ed;
127	/** Global connection to the client. */
128	VBSFCLIENT g_VBoxVFSClient;
129	/** Global VFS Operations pointer. */
130	vfsops_t *g_pVBoxVFS_vfsops;
131	/** The file system type identifier. */
132	static int g_VBoxVFSType;
133	/** Major number of this module */
134	static major_t g_VBoxVFSMajor;
135	/** Minor instance number */
136	static minor_t g_VBoxVFSMinor;
137	/** Minor lock mutex protection */
138	static kmutex_t g_VBoxVFSMinorMtx;
139
140
141	/**
142	* Kernel entry points
143	*/
144	int _init(void)
145	{
146	LogFlow((DEVICE_NAME ":_init\n"));
147
148	return mod_install(&g_VBoxVFSModLinkage);;
149	}
150
151
152	int _fini(void)
153	{
154	LogFlow((DEVICE_NAME ":_fini\n"));
155
156	int rc = mod_remove(&g_VBoxVFSModLinkage);
157	if (rc)
158	return rc;
159
160	/* Blow away the operation vectors*/
161	vfs_freevfsops_by_type(g_VBoxVFSType);
162	vn_freevnodeops(g_pVBoxVFS_vnodeops);
163	}
164
165
166	int _info(struct modinfo *pModInfo)
167	{
168	LogFlow((DEVICE_NAME ":_info\n"));
169
170	return mod_info(&g_VBoxVFSModLinkage, pModInfo);
171	}
172
173
174	static int VBoxVFS_Init(int fType, char *pszName)
175	{
176	int rc;
177
178	LogFlow((DEVICE_NAME ":VBoxVFS_Init\n"));
179
180	g_VBoxVFSType = fType;
181
182	/* Initialize the R0 guest library. */
183	rc = vboxInit();
184	if (VBOX_SUCCESS(rc))
185	{
186	/* Connect to the host service. */
187	rc = vboxConnect(&g_VBoxVFSClient);
188	if (VBOX_SUCCESS(rc))
189	{
190	/* Use UTF-8 encoding. */
191	rc = vboxCallSetUtf8 (&g_VBoxVFSClient);
192	if (VBOX_SUCCESS(rc))
193	{
194	/* Fill up VFS user entry points. */
195	static const fs_operation_def_t s_VBoxVFS_vfsops_template[] =
196	{
197	VFSNAME_MOUNT, { .vfs_mount = VBoxVFS_Mount },
198	VFSNAME_UNMOUNT, { .vfs_unmount = VBoxVFS_Unmount },
199	VFSNAME_ROOT, { .vfs_root = VBoxVFS_Root },
200	VFSNAME_STATVFS, { .vfs_statvfs = VBoxVFS_Statfs },
201	VFSNAME_VGET, { .vfs_vget = VBoxVFS_VGet },
202	VFSNAME_FREEVFS, { .vfs_freevfs = VBoxVFS_FreeVFS },
203	NULL, NULL
204	};
205
206	rc = vfs_setfsops(fType, s_VBoxVFS_vfsops_template, &g_pVBoxVFS_vfsops);
207	if (!rc)
208	{
209	/* Set VNode operations. */
210	rc = vn_make_ops(pszName, g_VBoxVFS_vnodeops_template, &g_pVBoxVFS_vnodeops);
211	if (!rc)
212	{
213	/* Get a free major number. */
214	g_VBoxVFSMajor = getudev();
215	if (g_VBoxVFSMajor != (major_t)-1)
216	{
217	/* Initialize minor mutex here. */
218	mutex_init(&g_VBoxVFSMinorMtx, "VBoxVFSMinorMtx", MUTEX_DEFAULT, NULL);
219	LogFlow((DEVICE_NAME ":Successfully loaded vboxvfs.\n"));
220	return 0;
221	}
222	else
223	{
224	LogRel((DEVICE_NAME ":getudev failed.\n"));
225	rc = EMFILE;
226	}
227	}
228	else
229	LogRel((DEVICE_NAME ":vn_make_ops failed. rc=%d\n", rc));
230	}
231	else
232	LogRel((DEVICE_NAME ":vfs_setfsops failed. rc=%d\n", rc));
233	}
234	else
235	{
236	LogRel((DEVICE_NAME ":vboxCallSetUtf8 failed. rc=%d\n", rc));
237	rc = EPROTO;
238	}
239	vboxDisconnect(&g_VBoxVFSClient);
240	}
241	else
242	{
243	LogRel((DEVICE_NAME ":Failed to connect to host! rc=%d\n", rc));
244	rc = ENXIO;
245	}
246	vboxUninit();
247	}
248	else
249	{
250	LogRel((DEVICE_NAME ":Failed to initialize R0 lib. rc=%d\n", rc));
251	rc = ENXIO;
252	}
253	return rc;
254	}
255
256	static int VBoxVFS_Mount(vfs_t pVFS, vnode_t pVNode, struct mounta pMount, cred_t pCred)
257	{
258	int rc = 0;
259	int Uid = 0;
260	int Gid = 0;
261	char *pszShare = NULL;
262	size_t cbShare = NULL;
263	pathname_t PathName;
264	vboxvfs_vnode_t *pVNodeRoot = NULL;
265	vnode_t *pVNodeSpec = NULL;
266	vnode_t *pVNodeDev = NULL;
267	dev_t Dev = 0;
268	SHFLSTRING *pShflShareName = NULL;
269	RTFSOBJINFO FSInfo;
270	size_t cbShflShareName = 0;
271	vboxvfs_globinfo_t *pVBoxVFSGlobalInfo = NULL;
272	int AddrSpace = (pMount->flags & MS_SYSSPACE) ? UIO_SYSSPACE : UIO_USERSPACE;
273
274	LogFlow((DEVICE_NAME ":VBoxVFS_Mount\n"));
275
276	/* Check user credentials for mounting in the specified target. */
277	rc = secpolicy_fs_mount(pCred, pVNode, pVFS);
278	if (rc)
279	{
280	LogRel((DEVICE_NAME ":VBoxVFS_Mount: secpolicy_fs_mount failed! invalid credentials.rc=%d\n", rc));
281	return EPERM;
282	}
283
284	/* We can mount to only directories. */
285	if (pVNode->v_type != VDIR)
286	return ENOTDIR;
287
288	/* We don't support remounting. */
289	if (pMount->flags & MS_REMOUNT)
290	return ENOTSUP;
291
292	mutex_enter(&pVNode->v_lock);
293	if ( !(pMount->flags & MS_OVERLAY)
294	&& (pVNode->v_count > 1 \|\| (pVNode->v_flag & VROOT)))
295	{
296	LogRel((DEVICE_NAME ":VBoxVFS_Mount: device busy.\n"));
297	mutex_exit(&pVNode->v_lock);
298	return EBUSY;
299	}
300	mutex_exit(&pVNode->v_lock);
301
302	/* From what I understood the options are already parsed at a higher level */
303	if ( (pMount->flags & MS_DATA)
304	&& pMount->datalen > 0)
305	{
306	LogRel((DEVICE_NAME ":VBoxVFS_Mount: unparsed options not supported.\n"));
307	return EINVAL;
308	}
309
310	/* Get UID argument (optional). */
311	rc = vboxvfs_GetIntOpt(pVFS, MNTOPT_VBOXVFS_UID, &Uid);
312	if (rc < 0)
313	{
314	LogRel((DEVICE_NAME ":VBoxVFS_Mount: invalid uid value.\n"));
315	return EINVAL;
316	}
317
318	/* Get GID argument (optional). */
319	rc = vboxvfs_GetIntOpt(pVFS, MNTOPT_VBOXVFS_GID, &Gid);
320	if (rc < 0)
321	{
322	LogRel((DEVICE_NAME ":VBoxVFS_Mount: invalid gid value.\n"));
323	return EINVAL;
324	}
325
326	/* Get special (sharename). */
327	rc = pn_get(pMount->spec, AddrSpace, &PathName);
328	if (!rc)
329	{
330	/* Get an available minor instance number for this mount. */
331	mutex_enter(&g_VBoxVFSMinorMtx);
332	do
333	{
334	atomic_add_32_nv(&g_VBoxVFSMinor, 1) & L_MAXMIN32;
335	Dev = makedevice(g_VBoxVFSMajor, g_VBoxVFSMinor);
336	} while (vfs_devismounted(Dev));
337	mutex_exit(&g_VBoxVFSMinorMtx);
338
339	cbShare = strlen(PathName.pn_path);
340	pszShare = RTMemAlloc(cbShare);
341	if (pszShare)
342	memcpy(pszShare, PathName.pn_path, cbShare);
343	else
344	{
345	LogRel((DEVICE_NAME ":VBoxVFS_Mount: failed to alloc %d bytes for sharename.\n", cbShare));
346	rc = ENOMEM;
347	}
348	}
349	else
350	{
351	LogRel((DEVICE_NAME ":VBoxVFS_Mount: failed to get sharename.rc=%d\n", rc));
352	rc = EINVAL;
353	}
354	pn_free(&PathName);
355
356	if (rc)
357	{
358	if (pszShare)
359	RTMemFree(pszShare);
360	return rc;
361	}
362
363	/* Allocate the global info. structure. */
364	pVBoxVFSGlobalInfo = RTMemAlloc(sizeof(*pVBoxVFSGlobalInfo));
365	if (pVBoxVFSGlobalInfo)
366	{
367	cbShflShareName = offsetof(SHFLSTRING, String.utf8) + cbShare + 1;
368	pShflShareName = RTMemAllocZ(cbShflShareName);
369	if (pShflShareName)
370	{
371	pShflShareName->u16Length = cbShflShareName;
372	pShflShareName->u16Size = cbShflShareName + 1;
373	memcpy (pShflShareName->String.utf8, pszShare, cbShare + 1);
374
375	rc = vboxCallMapFolder(&g_VBoxVFSClient, pShflShareName, &pVBoxVFSGlobalInfo->Map);
376	RTMemFree(pShflShareName);
377	if (VBOX_SUCCESS(rc))
378	rc = 0;
379	else
380	{
381	LogRel((DEVICE_NAME ":VBoxVFS_Mount: vboxCallMapFolder failed rc=%d\n", rc));
382	rc = EPROTO;
383	}
384	}
385	else
386	{
387	LogRel((DEVICE_NAME ":VBoxVFS_Mount: RTMemAllocZ failed to alloc %d bytes for ShFlShareName.\n", cbShflShareName));
388	rc = ENOMEM;
389	}
390	RTMemFree(pVBoxVFSGlobalInfo);
391	}
392	else
393	{
394	LogRel((DEVICE_NAME ":VBoxVFS_Mount: RTMemAlloc failed to alloc %d bytes for global struct.\n", sizeof(*pVBoxVFSGlobalInfo)));
395	rc = ENOMEM;
396	}
397
398	/* Undo work on failure. */
399	if (rc)
400	goto mntError1;
401
402	/* Initialize the per-filesystem mutex */
403	mutex_init(&pVBoxVFSGlobalInfo->MtxFS, "VBoxVFS_FSMtx", MUTEX_DEFAULT, NULL);
404
405	pVBoxVFSGlobalInfo->Uid = Uid;
406	pVBoxVFSGlobalInfo->Gid = Gid;
407	pVBoxVFSGlobalInfo->pVFS = pVFS;
408	pVFS->vfs_data = pVBoxVFSGlobalInfo;
409	pVFS->vfs_fstype = g_VBoxVFSType;
410	pVFS->vfs_dev = Dev;
411	vfs_make_fsid(&pVFS->vfs_fsid, Dev, g_VBoxVFSType);
412
413	/* Allocate root vboxvfs_vnode_t object */
414	pVNodeRoot = RTMemAlloc(sizeof(*pVNodeRoot));
415	if (pVNodeRoot)
416	{
417	/* Initialize vnode protection mutex */
418	mutex_init(&pVNodeRoot->MtxContents, "VBoxVFS_VNodeMtx", MUTEX_DEFAULT, NULL);
419
420	pVBoxVFSGlobalInfo->pVNodeRoot = pVNodeRoot;
421
422	/* Allocate root path */
423	pVNodeRoot->pPath = RTMemAllocZ(sizeof(SHFLSTRING) + 1);
424	if (pVNodeRoot->pPath)
425	{
426	/* Initialize root path */
427	pVNodeRoot->pPath->u16Length = 1;
428	pVNodeRoot->pPath->u16Size = 2;
429	pVNodeRoot->pPath->String.utf8[0] = '/';
430	pVNodeRoot->pPath->String.utf8[1] = '\0';
431
432	/* Stat root node info from host */
433	rc = vboxvfs_Stat(__func__, pVBoxVFSGlobalInfo, pVNodeRoot->pPath, &FSInfo, B_FALSE);
434	if (!rc)
435	{
436	/* Initialize the root vboxvfs_node_t object */
437	vboxvfs_InitVNode(pVBoxVFSGlobalInfo, pVNodeRoot, &FSInfo);
438
439	/* Success! */
440	LogFlow((DEVICE_NAME ":VBoxVFS_Mount: success!\n", rc));
441	return 0;
442	}
443	else
444	LogRel((DEVICE_NAME ":VBoxVFS_Mount: vboxvfs_Stat failed rc(errno)=%d\n", rc));
445	RTMemFree(pVNodeRoot->pPath);
446	}
447	else
448	{
449	LogRel((DEVICE_NAME ":VBoxVFS_Mount: failed to alloc memory for root node path.\n"));
450	rc = ENOMEM;
451	}
452	RTMemFree(pVNodeRoot);
453	}
454	else
455	{
456	LogRel((DEVICE_NAME ":VBoxVFS_Mount: failed to alloc memory for root node.\n"));
457	rc = ENOMEM;
458	}
459
460	/* Undo work in reverse. */
461	mntError1:
462	RTMemFree(pszShare);
463	return rc;
464	}
465
466	static int VBoxVFS_Unmount(vfs_t pVFS, int fUnmount, cred_t pCred)
467	{
468	int rc;
469	vboxvfs_globinfo_t *pVBoxVFSGlobalInfo;
470
471	LogFlow((DEVICE_NAME ":VBoxVFS_Unmount.\n"));
472
473	/* Check if user can unmount. */
474	rc = secpolicy_fs_unmount(pCred, pVFS);
475	if (rc)
476	{
477	LogRel((DEVICE_NAME ":VBoxVFS_Unmount: insufficient privileges to unmount.rc=%d\n", rc));
478	return EPERM;
479	}
480
481	/* @todo -XXX - Not sure of supporting force unmounts. What this means is that a failed force mount could bring down
482	* the entire system as hanging about vnode releases would no longer be valid after unloading ourselves...
483	*/
484	if (fUnmount & MS_FORCE)
485	pVFS->vfs_flag \|= VFS_UNMOUNTED;
486
487	/* @todo implement ref-counting of active vnodes & check for busy state here. */
488	/* @todo mutex protection needed here */
489	pVBoxVFSGlobalInfo = VFS_TO_VBOXVFS(pVFS);
490
491	rc = vboxCallUnmapFolder(&g_VBoxVFSClient, &pVBoxVFSGlobalInfo->Map);
492	if (VBOX_FAILURE(rc))
493	LogRel((DEVICE_NAME ":VBoxVFS_Unmount: failed to unmap shared folder. rc=%d\n", rc));
494
495	VN_RELE(VBOXVN_TO_VN(pVBoxVFSGlobalInfo->pVNodeRoot));
496
497	RTMemFree(pVBoxVFSGlobalInfo->pVNodeRoot->pPath);
498	RTMemFree(pVBoxVFSGlobalInfo->pVNodeRoot);
499	RTMemFree(pVBoxVFSGlobalInfo);
500	pVBoxVFSGlobalInfo = NULL;
501	pVFS->vfs_data = NULL;
502
503	return 0;
504	}
505
506	static int VBoxVFS_Root(vfs_t pVFS, vnode_t *ppVNode)
507	{
508	vboxvfs_globinfo_t *pVBoxVFSGlobalInfo = VFS_TO_VBOXVFS(pVFS);
509	*ppVNode = VBOXVN_TO_VN(pVBoxVFSGlobalInfo->pVNodeRoot);
510	VN_HOLD(*ppVNode);
511
512	return 0;
513	}
514
515	static int VBoxVFS_Statfs(register vfs_t pVFS, struct statvfs64 pStat)
516	{
517	SHFLVOLINFO VolumeInfo;
518	uint32_t cbBuffer;
519	vboxvfs_globinfo_t *pVBoxVFSGlobalInfo;
520	dev32_t Dev32;
521	int rc;
522
523	pVBoxVFSGlobalInfo = VFS_TO_VBOXVFS(pVFS);
524	cbBuffer = sizeof(VolumeInfo);
525	rc = vboxCallFSInfo(&g_VBoxVFSClient, &pVBoxVFSGlobalInfo->Map, 0, SHFL_INFO_GET \| SHFL_INFO_VOLUME, &cbBuffer,
526	(PSHFLDIRINFO)&VolumeInfo);
527	if (VBOX_FAILURE(rc))
528	return RTErrConvertToErrno(rc);
529
530	bzero(pStat, sizeof(*pStat));
531	cmpldev(&Dev32, pVFS->vfs_dev);
532	pStat->f_fsid = Dev32;
533	pStat->f_flag = vf_to_stf(pVFS->vfs_flag);
534	pStat->f_bsize = VolumeInfo.ulBytesPerAllocationUnit;
535	pStat->f_frsize = VolumeInfo.ulBytesPerAllocationUnit;
536	pStat->f_bfree = VolumeInfo.ullAvailableAllocationBytes / VolumeInfo.ulBytesPerAllocationUnit;
537	pStat->f_bavail = VolumeInfo.ullAvailableAllocationBytes / VolumeInfo.ulBytesPerAllocationUnit;
538	pStat->f_blocks = VolumeInfo.ullTotalAllocationBytes / VolumeInfo.ulBytesPerAllocationUnit;
539	pStat->f_files = 1000;
540	pStat->f_ffree = 1000; /* don't return 0 here since the guest may think that it is not possible to create any more files */
541	pStat->f_namemax = 255; /* @todo is this correct?? */
542
543	strlcpy(pStat->f_basetype, vfssw[pVFS->vfs_fstype].vsw_name, sizeof(pStat->f_basetype));
544	strlcpy(pStat->f_fstr, DEVICE_NAME, sizeof(pStat->f_fstr));
545
546	return 0;
547	}
548
549	static int VBoxVFS_VGet(vfs_t pVFS, vnode_t ppVNode, struct fid pFid)
550	{
551	/* -- TODO -- */
552	return 0;
553	}
554
555	static void VBoxVFS_FreeVFS(vfs_t *pVFS)
556	{
557	vboxDisconnect(&g_VBoxVFSClient);
558	vboxUninit();
559	}
560
561	static int vboxvfs_CheckMountPerm(vfs_t pVFS, struct mounta pMount, vnode_t pVNodeSpec, cred_t pCred)
562	{
563	/* Check if user has the rights to mount the special file. */
564	int fOpen = FREAD \| FWRITE;
565	int fAccess = VREAD \| VWRITE;
566	int rc;
567
568	if (pVNodeSpec->v_type != VBLK)
569	return ENOTBLK;
570
571	if ( (pVFS->vfs_flag & VFS_RDONLY)
572	\|\| (pMount->flags & MS_RDONLY))
573	{
574	fOpen = FREAD;
575	fAccess = VREAD;
576	}
577
578	rc = VOP_ACCESS(pVNodeSpec, fAccess, 0, pCred, NULL /* caller_context */);
579	if (!rc)
580	rc = secpolicy_spec_open(pCred, pVNodeSpec, fOpen);
581
582	return rc;
583	}
584
585	static int vboxvfs_GetIntOpt(vfs_t pVFS, char pszOpt, int *pValue)
586	{
587	int rc;
588	long Val;
589	char *pchOpt = NULL;
590	char *pchEnd = NULL;
591
592	rc = vfs_optionisset(pVFS, pszOpt, &pchOpt);
593	if (rc)
594	{
595	rc = ddi_strtol(pchOpt, &pchEnd, 10 /* base */, &Val);
596	if ( !rc
597	&& Val > INT_MIN
598	&& Val < INT_MAX
599	&& pchEnd == pchOpt + strlen(pchOpt))
600	{
601	*pValue = (int)Val;
602	return 0;
603	}
604	return -1;
605	}
606	return 1;
607	}
608

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source: vbox/trunk/src/VBox/Additions/solaris/SharedFolders/vboxvfs_vfsops.c@ 10516

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